Patentable/Patents/US-9832457
US-9832457

Autostereoscopic 3D image display device for flattening viewing zone and minimizing dynamic crosstalk

PublishedNovember 28, 2017
Assigneenot available in USPTO data we have
Inventorsnot available in USPTO data we have
Technical Abstract

The present invention relates to a 3D image display device and includes an image display panel for displaying a 3D image, a control unit for controlling a viewpoint image, and a viewer position tracking system for determining the position of a viewer's pupil and transmitting positional information to the control unit, wherein the image display panel provides multiple viewpoints such as four or more viewpoints, and the intersection of the viewing zone for any one of the multiple viewpoints with the field of view of an adjacent viewpoint is at least 85% of the maximum brightness of one viewpoint.

Patent Claims
14 claims

Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.

Claim 1

Original Legal Text

1. A three-dimensional (3D) image display device comprising: an image display panel configured to display a 3D image using a parallax separation means; a control unit configured to control viewpoint image information; and a viewer position tracking system configured to determine positions of a viewer's pupils and transmit positional information to the control unit, wherein the image display panel provides at least four viewpoints, and determines, using the viewpoint image information, an intersection point between a viewing zone of any one of the at least four viewpoints and a viewing zone of an adjacent viewpoint; wherein, when the parallax separation means is a parallax barrier and N-1 viewpoint centers are spaced between two binocular viewpoints at a predetermined distance (N is an integer of 2 to 65), an aperture width of the parallax barrier is 1.6 to (2N-1) times a pixel width.

Plain English Translation

A 3D image display device uses an image display panel to show 3D images, using a method to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 2

Original Legal Text

2. The 3D image display device of claim 1 , wherein the image display panel displays the 3D image using a parallax barrier, a lenticular lens, or a line light source serving as the parallax separation means.

Plain English Translation

The 3D image display device displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 3

Original Legal Text

3. The 3D image display device of claim 2 , wherein, in an image display panel, the control unit controls viewpoint image information for each 3D pixel line using viewing-positional information obtained through the tracking of the viewer position tracking system.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint. The control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. The viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 4

Original Legal Text

4. The 3D image display device of claim 3 , wherein each 3D pixel line is formed by an aperture of the parallax separation means, and pixels on the image display panel for providing viewpoint images.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. The viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 5

Original Legal Text

5. The 3D image display device of claim 4 , wherein crosstalk is minimized by providing the viewpoint images corresponding to both eyes of the viewer at viewpoints corresponding to one or more centers of one or more viewing zones closest to the centers of both eyes of the viewer and removing any other viewpoint image other than those of selected viewpoints using 3D information about positions of the viewer's pupils, the 3D information being obtained through real-time tracking via the viewer position tracking system.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. Crosstalk (interference between viewpoints) is reduced by showing the images for both eyes at the viewpoints closest to the viewer's eye positions. Any other viewpoint images are removed, based on the viewer's 3D pupil positions tracked in real-time. The viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 6

Original Legal Text

6. The 3D image display device of claim 5 , wherein the providing of the viewpoint images corresponding to both eyes of the viewer and the removing of the viewpoint image other than those of the selected viewpoints are determined for each 3D pixel line to minimize crosstalk.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. Crosstalk (interference between viewpoints) is reduced by showing the images for both eyes at the viewpoints closest to the viewer's eye positions. Any other viewpoint images are removed, based on the viewer's 3D pupil positions tracked in real-time. The providing of the correct viewpoint images for both eyes, and the removing of other viewpoint images, are determined separately for *each* 3D pixel line, to reduce crosstalk. The viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 7

Original Legal Text

7. The 3D image display device of claim 5 , wherein the viewer position tracking system is capable of tracking positions of a plurality of viewers and configured to track positions of each viewer's pupils and deliver information about the number of viewers and positions of the viewers' pupils to the control unit.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. Crosstalk (interference between viewpoints) is reduced by showing the images for both eyes at the viewpoints closest to the viewer's eye positions. Any other viewpoint images are removed, based on the viewer's 3D pupil positions tracked in real-time. The viewer position tracking system can track *multiple* viewers. It tracks each viewer's pupil positions, and sends the *number* of viewers and their pupil positions to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 8

Original Legal Text

8. The 3D image display device of claim 7 , wherein crosstalk is minimized with respect to the plurality of viewers by providing the viewpoint images corresponding to both eyes of each of the viewers at viewpoints corresponding to the one or more centers of the one or more viewing zones closest to the centers of both of the eyes of each of the viewers and removing the viewpoint image other than those of the selected viewpoints using 3D information about the positions of the plurality of viewers' pupils, the 3D information being obtained through the real-time tracking via the viewer position tracking system.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. The viewer position tracking system can track *multiple* viewers. It tracks each viewer's pupil positions, and sends the *number* of viewers and their pupil positions to the control unit. Crosstalk is reduced for *multiple* viewers by showing the correct viewpoint images for each viewer's eyes and removing other viewpoint images, using the real-time tracked pupil positions of *all* viewers. The providing of the correct viewpoint images for both eyes, and the removing of other viewpoint images, are determined separately for *each* 3D pixel line, to reduce crosstalk. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 9

Original Legal Text

9. The 3D image display device of claim 8 , wherein the providing of the viewpoint images corresponding to both eyes of each of the plurality of viewers and the removing of the viewpoint image other than those of the selected viewpoints are determined for each 3D pixel line to minimize crosstalk with respect to the plurality of viewers.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint, and the control unit uses the viewer's position (tracked by the viewer position tracking system) to manage the viewpoint image information for each 3D pixel line. Each 3D pixel line is created by an opening (aperture) in the parallax separation means and pixels on the image display panel, which show the different viewpoint images. The viewer position tracking system can track *multiple* viewers. It tracks each viewer's pupil positions, and sends the *number* of viewers and their pupil positions to the control unit. Crosstalk is reduced for *multiple* viewers by showing the correct viewpoint images for each viewer's eyes and removing other viewpoint images, using the real-time tracked pupil positions of *all* viewers. The providing of the correct viewpoint images for both eyes, and the removing of other viewpoint images, are determined separately for *each* 3D pixel line, to reduce crosstalk *for multiple viewers*. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel.

Claim 10

Original Legal Text

10. The 3D image display device of claim 2 , wherein the parallax barrier, lenticular lens, or line light source is disposed to be inclined at a predetermined angle from a vertical line of a screen of the 3D image display device.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel. The parallax barrier, lenticular lens, or line light source is placed at an angle to the vertical line of the screen.

Claim 11

Original Legal Text

11. The 3D image display device of claim 10 , wherein pixels of the image display device are inclined in substantially the same angle as an inclination of the aperture of the corresponding parallax barrier, line light source, or lenticular lens.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel. The parallax barrier, lenticular lens, or line light source is placed at an angle to the vertical line of the screen. The pixels of the image display are also angled at roughly the same angle as the parallax barrier's openings, the line light source, or the lenticular lens.

Claim 12

Original Legal Text

12. The 3D image display device of claim 10 , wherein at least two edges of the pixels of the image display device are removed.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax barrier, a lenticular lens, or a line light source to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel. The parallax barrier, lenticular lens, or line light source is placed at an angle to the vertical line of the screen. At least two edges of the pixels in the image display are removed (e.g., the pixels are not rectangular).

Claim 13

Original Legal Text

13. The 3D image display device of claim 1 , wherein the viewer position tracking system is configured to track 3D coordinates of positions of both of the viewer's pupils by tracking the positions of the viewer's pupils or by tracking a position of the viewer's face.

Plain English Translation

In the 3D image display device, the image display panel displays 3D images, using a parallax separation means. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a parallax barrier is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), the width of the openings in the parallax barrier is 1.6 to (2N-1) times the width of a pixel. The viewer position tracking system finds the 3D coordinates of the viewer's pupils by tracking the pupils directly, or by tracking the position of the viewer's face.

Claim 14

Original Legal Text

14. A three-dimensional (3D) image display device comprising: an image display panel configured to display a 3D image using a parallax separation means; a control unit configured to control viewpoint image information; and a viewer position tracking system configured to determine positions of a viewer's pupils and transmit positional information to the control unit, wherein the image display panel provides at least four viewpoints, and determines, using the viewpoint image information, an intersection point between a viewing zone of any one of the at least four viewpoints and a viewing zone of an adjacent viewpoint; wherein, when the parallax separation means is a lenticular lens, N-1viewpoint centers are spaced at a predetermined distance between two binocular viewpoints (N is an integer of 2 to 65), and an original focal length (fo) of the lenticular lens is a distance between the lenticular lens and pixels of the image display panel, f/fo is 0.5 to 0.9 inclusive if a focal length (f) of the lenticular lens is less than the original focal length (fo) of the lenticular lens, and f/fo is 1.06 to 20.8 inclusive if the focal length (f) of the lenticular lens is greater than the original focal length (fo) of the lenticular lens.

Plain English Translation

A 3D image display device uses an image display panel to show 3D images, using a method to separate parallax. A control unit manages the image information for each viewpoint. A viewer position tracking system finds the viewer's pupils' locations and sends this information to the control unit. The display panel shows at least four different viewpoints. The device calculates where the viewing zone of one viewpoint intersects with an adjacent viewpoint. If a lenticular lens is used to separate parallax, and N-1 viewpoint centers are equally spaced between two eye positions (N is 2 to 65), and the original focal length (fo) of the lens is the distance between the lens and the pixels, then: if the actual focal length (f) is *less* than fo, then f/fo is between 0.5 and 0.9; or if f is *greater* than fo, then f/fo is between 1.06 and 20.8.

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Patent Metadata

Filing Date

August 8, 2012

Publication Date

November 28, 2017

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